From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45AA9C4332F for ; Mon, 19 Dec 2022 10:00:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231277AbiLSJ75 (ORCPT ); Mon, 19 Dec 2022 04:59:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57786 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230346AbiLSJ7y (ORCPT ); Mon, 19 Dec 2022 04:59:54 -0500 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9BD4A26D0; Mon, 19 Dec 2022 01:59:53 -0800 (PST) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1p7Cw4-00070z-7R; Mon, 19 Dec 2022 10:59:52 +0100 Message-ID: <90bf9797-a949-b75b-285a-9056b9ba7f56@leemhuis.info> Date: Mon, 19 Dec 2022 10:59:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: BUG: unable to handle kernel paging request in bpf_dispatcher_xdp #forregzbot Content-Language: en-US, de-DE From: Thorsten Leemhuis To: bpf , "regressions@lists.linux.dev" Cc: Linux Kernel Mailing List , netdev References: <96ee7141-f09c-4df9-015b-6ae8f3588091@leemhuis.info> In-Reply-To: <96ee7141-f09c-4df9-015b-6ae8f3588091@leemhuis.info> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1671443993;3dc84f23; X-HE-SMSGID: 1p7Cw4-00070z-7R Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08.12.22 09:44, Thorsten Leemhuis wrote: > [Note: this mail contains only information for Linux kernel regression > tracking. Mails like these contain '#forregzbot' in the subject to make > then easy to spot and filter out. The author also tried to remove most > or all individuals from the list of recipients to spare them the hassle.] > > On 06.12.22 04:28, Hao Sun wrote: >> >> The following crash can be triggered with the BPF prog provided. >> It seems the verifier passed some invalid progs. I will try to simplify >> the C reproducer, for now, the following can reproduce this: > > Thanks for the report. To be sure below issue doesn't fall through the > cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression > tracking bot: > > #regzbot ^introduced c86df29d11df > #regzbot title net/bpf: BUG: unable to handle kernel paging request in > bpf_dispatcher_xdp > #regzbot ignore-activity #regzbot fix: bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func